// Java 3D Test Applet
// ScaleInterpolatorTest.java
//   Copyright (c) 1999 ENDO Yasuyuki
//                      mailto:yasuyuki@javaopen.org
//                      http://www.javaopen.org/j3dbook/index.html

import java.applet.*;
import java.awt.*;
import java.awt.event.*;
import javax.media.j3d.*;
import javax.vecmath.*;
import com.sun.j3d.utils.applet.MainFrame;
import com.sun.j3d.utils.universe.SimpleUniverse;
import com.sun.j3d.utils.behaviors.mouse.MouseRotate;
import com.sun.j3d.utils.image.TextureLoader;

public class ScaleInterpolatorTest extends Applet {
  private AlphaPanel apanel = null;
  private ScaleInterpolator sinterp = null;

  public ScaleInterpolatorTest() {
    this.setLayout(new BorderLayout());
    
    apanel = new AlphaPanel();
    this.add(apanel, BorderLayout.NORTH);
    
    Panel spanel = new Panel();
    this.add(spanel, BorderLayout.SOUTH);
    
    final Button sbutton = new Button("Stop");
    sbutton.addActionListener( new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        String blabel = sbutton.getLabel();
        if (blabel.equals("Start")) {
          sinterp.setEnable(true);
	  apanel.reset();
          sbutton.setLabel("Stop");
        } else if (blabel.equals("Stop")) {
          sinterp.setEnable(false);
          sbutton.setLabel("Start");
        }
      }
    });
    spanel.add(sbutton);
    
    spanel.add( new Label("Mimimum") );
    TextField minfield = new TextField("0.1");
    minfield.addActionListener( new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        float s = 0.0f;
        try {
          s = Float.parseFloat(e.getActionCommand());
          sinterp.setMinimumScale(s);
        } catch (NumberFormatException ex) {}
      }
    });
    spanel.add(minfield);
    
    spanel.add( new Label("Maximum") );
    TextField maxfield = new TextField("1.0");
    maxfield.addActionListener( new ActionListener() {
      public void actionPerformed(ActionEvent e) {
        float s = 0.0f;
        try {
          s = Float.parseFloat(e.getActionCommand());
          sinterp.setMaximumScale(s);
        } catch (NumberFormatException ex) {}
      }
    });
    spanel.add(maxfield);
    
    GraphicsConfiguration config = SimpleUniverse.getPreferredConfiguration();
    Canvas3D canvas = new Canvas3D(config);
    this.add(canvas, BorderLayout.CENTER);
    
    SimpleUniverse universe = new SimpleUniverse(canvas);
    universe.getViewingPlatform().setNominalViewingTransform();
    
    universe.addBranchGraph(createSceneGraph());
  }
  
  private BranchGroup createSceneGraph() {
    BranchGroup root = new BranchGroup();
    
    BoundingSphere bounds = new BoundingSphere(new Point3d(), 100.0);

    DirectionalLight light =
      new DirectionalLight( new Color3f(1.0f, 1.0f, 1.0f),
                            new Vector3f(-0.57f, -0.57f, -0.57f) );
    light.setInfluencingBounds(bounds);
    root.addChild(light);
    
    AmbientLight alight = new AmbientLight();
    alight.setInfluencingBounds(bounds);
    root.addChild(alight);

    TransformGroup trans = new TransformGroup();
    trans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    trans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    trans.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
    root.addChild(trans);
    
    double[] vertices = { -0.8, -0.8, 0.0,
                          -0.8,  0.8, 0.0,
                          -0.4, -0.8, 0.0,
                          -0.4,  0.8, 0.0,
                           0.0, -0.8, 0.0,
                           0.0,  0.8, 0.0,
                           0.4, -0.8, 0.0,
                           0.4,  0.8, 0.0,
                           0.8, -0.8, 0.0,
                           0.8,  0.8, 0.0,
                          -0.8, -0.8, 0.0,
                           0.8, -0.8, 0.0,
                          -0.8, -0.4, 0.0,
                           0.8, -0.4, 0.0,
                          -0.8,  0.0, 0.0,
                           0.8,  0.0, 0.0,
                          -0.8,  0.4, 0.0,
                           0.8,  0.4, 0.0,
                          -0.8,  0.8, 0.0,
                           0.8,  0.8, 0.0 };

    LineArray geom = new LineArray( vertices.length / 3, GeometryArray.COORDINATES);
    geom.setCoordinates(0, vertices);
    Shape3D grid = new Shape3D(geom);
    trans.addChild(grid);

    TransformGroup strans = new TransformGroup();
    strans.setCapability(TransformGroup.ALLOW_TRANSFORM_READ);
    strans.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE);
    strans.setCapability(TransformGroup.ENABLE_PICK_REPORTING);
    trans.addChild(strans);
    
    MouseRotate rotator = new MouseRotate();
    rotator.setSchedulingBounds(bounds);
    rotator.setTransformGroup(trans);
    root.addChild(rotator);
    
    Heart heart = new Heart();
    Appearance app = createAppearance();
    Shape3D shape = new Shape3D( heart.getGeometry(), app );
    strans.addChild(shape);
    
    sinterp = new ScaleInterpolator(apanel.getAlpha(), strans);
    sinterp.setSchedulingBounds(bounds);
    root.addChild(sinterp);
    
    return root;
  }
  
  
  private Appearance createAppearance() {
    Appearance app = new Appearance();
    app.setCapability(Appearance.ALLOW_MATERIAL_READ);
    app.setCapability(Appearance.ALLOW_MATERIAL_WRITE);
    
    //app.setPointAttributes( new PointAttributes(4.0f, false) );
    //app.setPolygonAttributes(
    //  new PolygonAttributes( PolygonAttributes.POLYGON_LINE,
    //                         PolygonAttributes.CULL_BACK,
    //                         0.0f, false ) );

    Material mat = new Material();
    //mat.setCapability(Material.ALLOW_COMPONENT_READ);
    //mat.setCapability(Material.ALLOW_COMPONENT_WRITE);
    mat.setDiffuseColor( new Color3f(1.0f, 0.0f, 0.0f) );
    mat.setShininess(100.0f);
    
    TransparencyAttributes tattr =
      new TransparencyAttributes(TransparencyAttributes.FASTEST, 0.0f);
    tattr.setCapability(TransparencyAttributes.ALLOW_VALUE_READ);
    tattr.setCapability(TransparencyAttributes.ALLOW_VALUE_WRITE);
    app.setTransparencyAttributes(tattr);
    
    app.setMaterial(mat);
    
    return app;
  }

  public static void main(String[] args) {
    ScaleInterpolatorTest applet = new ScaleInterpolatorTest();
    Frame frame = new MainFrame(applet, 500, 500);
  }
}